As a child, Beniko had two close friends, Umi and Sora. They were twin brothers that lived next door but due to his "Brother-Complex" jealousy Umi stopped being friends with her and soon moved away. Sora stayed and he and Beniko devoloped a relationship but later tragedy hit as he tried to save Beniko. Umi reapears with the same voice, looks, but a more twisted personality than before. How will Beniko confront the twisted love and affection given to her by Umi, instead of from Sora?!

The series Bokura no Koi wa Shi ni Itaru Yamai no You de has been licensed, it is not available in Manga Fox.